X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=org.simantics.xml.sax.base%2Fsrc%2Forg%2Fsimantics%2Fxml%2Fsax%2Fbase%2FXMLElementNamedChildWriterBase.java;fp=org.simantics.xml.sax.base%2Fsrc%2Forg%2Fsimantics%2Fxml%2Fsax%2Fbase%2FXMLElementNamedChildWriterBase.java;h=69b6c8df0c7fe22e6352f1ab80b6bdeb62531e62;hb=dd3b2c7ecd5f4b60734f2602b16637aa8be2a263;hp=0000000000000000000000000000000000000000;hpb=47791aa9453c9d90786bc8ca7de102fb3ee90f3b;p=simantics%2Finterop.git

diff --git a/org.simantics.xml.sax.base/src/org/simantics/xml/sax/base/XMLElementNamedChildWriterBase.java b/org.simantics.xml.sax.base/src/org/simantics/xml/sax/base/XMLElementNamedChildWriterBase.java
new file mode 100644
index 0000000..69b6c8d
--- /dev/null
+++ b/org.simantics.xml.sax.base/src/org/simantics/xml/sax/base/XMLElementNamedChildWriterBase.java
@@ -0,0 +1,94 @@
+package org.simantics.xml.sax.base;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamWriter;
+
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.scl.compiler.elaboration.errors.ElabNode;
+
+public abstract class XMLElementNamedChildWriterBase implements XMLElementNamedChildWriter{
+
+	private Map<Resource,Class<? extends XMLElementWriter>> typeWriters = new HashMap<Resource, Class<? extends XMLElementWriter>>();
+	private Map<Resource,Class<? extends XMLElementWriter>> relationWriters = new HashMap<Resource, Class<? extends XMLElementWriter>>();
+	private Set<Class<? extends XMLElementWriter>> writers = new HashSet<Class<? extends XMLElementWriter>>();
+	
+	
+	public XMLElementNamedChildWriterBase() {
+	
+	}
+	
+	public XMLElementNamedChildWriterBase(ReadGraph graph) {
+		
+	}
+	
+	@Override
+	public Resource getType(ReadGraph graph) throws DatabaseException {
+		return null;
+	}
+	
+	@Override
+	public void start(ReadGraph graph, WriterElement instance, XMLStreamWriter writer) throws XMLStreamException {
+		writer.writeStartElement(getElementId());
+	}
+	
+	@Override
+	public void characters(ReadGraph graph, WriterElement instance, XMLStreamWriter writer)
+			throws XMLStreamException, DatabaseException {
+		
+	}
+	
+	@Override
+	public void end(ReadGraph graph, WriterElement instance, XMLStreamWriter writer) throws XMLStreamException {
+		writer.writeEndElement();
+	}
+	
+	@Override
+	public List<Resource> children(ReadGraph graph, WriterElement instance, XMLStreamWriter writer)
+			throws XMLStreamException, DatabaseException {
+		return Collections.EMPTY_LIST;
+	}
+	
+	@Override
+	public Class<? extends XMLElementWriter> getWriter(ReadGraph graph, Map<Resource, XMLElementWriter> writers, WriterElement child) throws DatabaseException{
+		Resource type = graph.getSingleType(child.instance);
+		Class<? extends XMLElementWriter> writerClass =  typeWriters.get(type);
+		if (writerClass != null)
+			return writerClass;
+		if (child.statement != null) {
+			writerClass = relationWriters.get(child.statement.getPredicate());
+			if (writerClass != null)
+				return writerClass;
+		}
+		XMLElementWriter writer = writers.get(type);
+		if (writer == null)
+			return null;
+		writerClass = writer.getClass();
+		if (this.writers.contains(writerClass))
+			return writerClass;
+		for (Class<?> c : this.writers)
+			if (c.isAssignableFrom(writerClass))
+				return writerClass;
+		return null;
+	}
+	
+	public void addTypeWriter(Resource type, Class<? extends XMLElementWriter> writer) {
+		typeWriters.put(type, writer);
+	}
+	
+	public void addRelationWriter(Resource relation, Class<? extends XMLElementWriter> writer) {
+		relationWriters.put(relation, writer);
+	}
+	
+	public void addWriter(Class<? extends XMLElementWriter> writer) {
+		writers.add(writer);
+	}
+}